Allis Chalmers HD-11 crawler
Built: 1955-1975 · Series: Other models
More machines from model year 1955
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
Allis-Chalmers – other models: construction machines from the construction division outside the named ranges, from the D17 backhoe to the HD-21 crawler, 40 to 152 kW, diesel and petrol engines from Allis-Chalmers and GM
This page gathers the Allis-Chalmers construction machines D17 backhoe, HD-11 crawler, HD-14 crawler, HD-16 Series B crawler and HD-21 crawler, which the register could not assign to a named range. The HD range denoted Allis-Chalmers's crawler dozers from the construction division, with the number as an ascending size and power class; the D17 backhoe is a version of the D17 field tractor fitted with a backhoe. In 1974 the construction division passed into the Fiat-Allis joint venture.
Read on 4 more paragraphs
The register lists here 5 versions with 40 to 152 kW, or 53 to 204 hp, with Allis-Chalmers engines and a GM Detroit Diesel 6-71 in the HD-21.
Such crawler dozers and backhoe loaders were used in earthmoving, road building and civil engineering, where the HD range, alongside makers such as Caterpillar and International Harvester, was a fixture of the post-war and 1960s US market.
Track undercarriages such as the HD range's spread the machine's weight over a large footprint, giving low ground pressure and good stability on loose or uneven ground, but they must be moved by low-bed trailer on the road. The wheeled D17 backhoe, by contrast, can drive itself on the road but loses traction and stability on soft ground.
Buying used, on these vintage construction machines the condition of tracks and rollers, clutch and final drive matter most, and on the HD-21 also the Detroit Diesel engine with its characteristic two-stroke technology; parts run through dealers specialising in classic construction machinery.
Sources: SpecCodex register, model data: Allis-Chalmers Pozostale modele (Bagger & Verdichtung)
Technical data
Engine
| Engine make | Allis-Chalmerscorrect |
|---|---|
| Fuel | dieselcorrect |
| Power | 94 hp (70 kW)correct |
| Cooling | water-cooledcorrect |
Drivetrain and chassis
| Drive | tracked undercarriagecorrect |
|---|
Origin and approval
| Plant | USAcorrect |
|---|
Frequently asked questions
How much power does the Allis Chalmers HD-11 crawler have?
The Allis Chalmers HD-11 crawler delivers 94 hp.
When was the Allis Chalmers HD-11 crawler built?
Production years: 1955-1975.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Load the hydraulics and watch for sag.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 9 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Sources: Tractor & Construction Plant Wiki (retrieved August 2026) · How we check the data
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